<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="25">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" style="width: 100%" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="username" label="姓名" width="180"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column label="状态">
          <template v-slot="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row.id)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 按钮 -->
            <el-tooltip effect="dark" content="编辑" placement="top" :enterable="false">
              <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">
              </el-button>
            </el-tooltip>
            <el-tooltip effect="dark" content="删除" placement="top" :enterable="false">
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)">
              </el-button>
            </el-tooltip>
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRoleDialog(scope.row)">
              </el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域-->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 3, 4]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <!-- model数据绑定对象  rules验证规则对象  ref引用对象 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 编辑用户的对话框 -->
    <el-dialog title="编辑用户信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClose">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClose">
      <div>
        <p>当前用户:{{ userInfo.username }}</p>
        <p>当前角色:{{ userInfo.role_name }}</p>
        <!-- 下拉菜单组件 -->
        <p>
          分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <!-- for循环生成里面的选项 -->
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    const checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmail =
        /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return callback()
      }
      callback(new Error("请输入合法的邮箱"))
    }
    // 验证手机号的规则
    const checkMobile = (rule, value, callback) => {
      // 验证手机号的正则
      const regMobile = /^(?:(?:\+|00)86)?1[3-9]\d{9}$/
      if (regMobile.test(value)) {
        // 合法的手机
        return callback()
      }
      callback(new Error("请输入合法的手机号"))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: "", // 查询参数
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2,
      },
      userList: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名长度应在3~10个字符之间",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "密码长度应在6~15个字符之间",
            trigger: "blur",
          },
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
      // 控制编辑用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          {
            required: true,
            message: "请输入用户邮箱",
            trigger: "blur",
          },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          {
            required: true,
            message: "请输入用户手机号",
            trigger: "blur",
          },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
      //分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      //需要被分配角色的用户的信息
      userInfo: {},
      //所有角色的数据列表
      rolesList: [],
      //已选中的角色id值
      selectedRoleId: "",
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      })
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表失败")
      }
      this.userList = res.data.users
      this.total = res.data.total
    },
    handleSizeChange(newSize) {
      // 当 ？条/页 改变时 就要根据最新的pagesize 调用获取数据列表函数 重新渲染到页面中来
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    handleCurrentChange(newpage) {
      // 当选择第几页时 也要调用获取数据列表函数 重新渲染到页面中来
      this.queryInfo.pagenum = newpage
      this.getUserList()
    },
    // 监听开关状态
    async userStateChanged(userinfo) {
      // console.log(userinfo)  其有一个属性mg_state 可以记录开关的状态
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        // 开关状态变化了 但数据更新失败 此时应该把开关状态复原
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error("更新用户状态失败")
      }
      this.$message.success("更新用户状态成功")
    },
    handleClose(done) {
      this.$confirm("确认关闭？")
        .then((_) => {
          done()
        })
        .catch((_) => {})
    },
    // 监听添加用户对话框的关闭事件  关闭后需重置表单
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        // console.log(valid)
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post("users", this.addForm)
        if (res.meta.status !== 201) {
          this.$messsage.error("添加用户失败")
        }
        this.$message.success("添加用户成功")
        // 添加成功后 隐藏添加的对话框
        this.addDialogVisible = false
        // 还需刷新列表
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id)
      const { data: res } = await this.$http.get("users/" + id)
      if (res.meta.status !== 200) {
        return this.$message.error("查询用户信息失败")
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听编辑用户对话框的关闭事件
    editDialogClose() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        // console.log(valid)
        if (!valid) return
        // 发起修改用户信息的请求
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          { email: this.editForm.email, mobile: this.editForm.mobile }
        )
        if (res.meta.status !== 200) {
          return this.$message.error("更新用户信息失败")
        }
        // 修改成功后 隐藏添加的对话框
        this.editDialogVisible = false
        // 还需刷新列表
        this.getUserList()
        // 提示修改成功
        this.$message.success("修改用户信息成功")
      })
    },
    // 根据id删除用户
    async removeUserById(id) {
      // console.log(id)
      // 弹框询问是否删除用户
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err)
      // 如果用户确认删除 则返回值为字符串 confirm
      // 如果用户取消删除 则返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== "confirm") {
        return this.$message.info("已经取消删除")
      }
      const { data: res } = await this.$http.delete("users/" + id)
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error("删除用户失败")
      }
      // 提示修改成功
      this.$message.success("删除用户成功")
      // 刷新列表
      this.getUserList()
    },
    //控制分配角色对话框的显示与隐藏
    async showSetRoleDialog(userInfo) {
      this.userInfo = userInfo
      //在展示对话框之前，获取所有角色列表
      const { data: res } = await this.$http.get("roles")
      if (res.meta.status !== 200) {
        return $this.message.error("获取角色列表失败")
      }
      this.rolesList = res.data //接收角色列表
      this.setRoleDialogVisible = true
    },
    //点击按钮 分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        //用户没有选择角色
        return this.$message.error("请选择要分配的角色")
      }
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        { rid: this.selectedRoleId }
      )
      if (res.meta.status !== 200) {
         return this.$message.error("更新角色失败")
      }
      this.$message.success("更新角色成功")
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    //监听分配角色对话框的关闭事件
    setRoleDialogClose() {
      this.selectedRoleId = '',
      this.userInfo={}
    }
  },
}
</script>

<style lang="less" scoped></style>
